Where Do Objects Become Scenes?
Where Do Objects Become Scenes?
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DOI：
10.1093/cercor/bhq240
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发表时间：
2011-08-01
期刊：
影响因子：
3.7
通讯作者：
Biederman, Irving
中科院分区：
文献类型：
--
作者：
Kim, Jiye G.;Biederman, Irving
在大脑皮层的腹侧视觉通路的后期阶段，已经发现了与个人视觉类别（如面部和物体）相协调的区域。但大多数视觉体验都是由场景组成的，其中多个对象相互作用。这种互动很容易用介词或动词形式来描述，例如，一只鸟栖息在鸟舍上。在途径的哪个阶段，对这种相互作用的敏感性出现了？在这里，我们报告说，显示为相互作用的对象对，与它们并排的描述相比（例如，鸟舍旁边的一只鸟），在外侧枕叶复合体中引起更大的活动，外侧枕叶复合体是最早的皮质区域，在那里形状与纹理区分开来。相互作用的新奇放大了这种增益，这种效应在并行实验中是不存在的。因此，类似场景的关系可能与对象形状的规范同时实现。
Regions tuned to individual visual categories, such as faces and objects, have been discovered in the later stages of the ventral visual pathway in the cortex. But most visual experience is composed of scenes, where multiple objects are interacting. Such interactions are readily described by prepositions or verb forms, for example, a bird perched on a birdhouse. At what stage in the pathway does sensitivity to such interactions arise? Here we report that object pairs shown as interacting, compared with their side-by-side depiction (e.g., a bird besides a birdhouse), elicit greater activity in the lateral occipital complex, the earliest cortical region where shape is distinguished from texture. Novelty of the interactions magnified this gain, an effect that was absent in the side-by-side depictions. Scene-like relations are thus likely achieved simultaneously with the specification of object shape.